package com.wkk.nursinghome.interceptor;

import com.wkk.nursinghome.bean.ResultBean;
import com.wkk.nursinghome.domain.Employee;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


@Component
@Slf4j
public class LoginInterceptor implements HandlerInterceptor {

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
//        System.out.println("执行了TestInterceptor的preHandle方法");
		try {
			//统一拦截（查询当前session是否存在user）(这里user会在每次登陆成功后，写入session)
			ResultBean user=(ResultBean) request.getSession().getAttribute("USER");
			if(user!=null){
				return true;
			}
			response.sendRedirect(request.getContextPath()+"/login");
		} catch (IOException e) {
			e.printStackTrace();
		}
		return false;//如果设置为false时，被请求时，拦截器执行到此处将不会继续操作
		//如果设置为true时，请求将会继续执行后面的操作
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
		// TODO Auto-generated method stub
		
	}

}
